F25B 2345/003
Control issues for charging or collecting refrigerant to or from a cycle
F25B2345/003 (Control issues for charging or collecting refrigerant to or from a cycle) appears on 166 US grants and 191 published applications in this corpus.
Search patents in F25B- Granted patents
- 166
- Published applications
- 191
- Assignees
- 94
- Inventors
- 365
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 4 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 2 |
| 2005 | 1 | 1 |
| 2006 | 4 | 9 |
| 2007 | 2 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 0 |
| 2010 | 2 | 3 |
| 2011 | 1 | 4 |
| 2012 | 3 | 5 |
| 2013 | 3 | 11 |
| 2014 | 2 | 12 |
| 2015 | 9 | 13 |
| 2016 | 16 | 7 |
| 2017 | 6 | 13 |
| 2018 | 13 | 12 |
| 2019 | 14 | 9 |
| 2020 | 11 | 8 |
| 2021 | 7 | 17 |
| 2022 | 12 | 17 |
| 2023 | 10 | 10 |
| 2024 | 11 | 14 |
| 2025 | 13 | 11 |
| 2026 | 5 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heat source unit and refrigerant handling method1 Sep 2026US 12,723,791 B2Daikin Industries, Ltd.
- Method to charge multiple refrigerants with desired concentrations14 Apr 2026US 12,601,529 B2Copeland Corporation
- Thermal management system and control method for thermal management system7 Apr 2026US 12,595,946 B2Toyota Jidosha Kabushiki Kaisha
- HVAC unit pressure, vacuum and charging apparatus and method27 Jan 2026US 12,535,251 B2Carrier Corporation
- Refrigerant recovery system and recovery cart thereof13 Jan 2026US 12,523,401 B2Trane International Inc.
- Method and apparatus for handling refrigerant17 Sep 2026US 2026/0276268 A1SK Innovation Co., Ltd.
- Method and apparatus for handling refrigerant17 Sep 2026US 2026/0276270 A1SK Innovation Co., Ltd.
- System and method for charging a phase change material (PCM) tank for pressure control at a flash tank27 Aug 2026US 2026/0251366 A1Lennox Industries Inc.
- Service tools and systems for processing fluid through a fluid access port9 Jul 2026US 2026/0194274 A1FasTest, Inc.
- Server device, refrigeration cycle system, and management method9 Jul 2026US 2026/0194276 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Automotive air-conditioning servicing system and method123US 4,755,957 AK-White Tools, Incorporated · 1988
- Heat pump refrigerant charge control system80US 4,484,452 AThe Trane Company · 1984
- Service station for refrigeration equipment62US 4,688,388 AKent-Moore Corporation · 1987
- Cost-effective remote monitoring, diagnostic and system health prediction system and method for vapor compression and heat pump units based on compressor discharge line temperature sampling54US 9,168,315 B1Mainstream Engineering Corporation · 2015
- Cooling apparatus and plasma processing apparatus having cooling apparatus31US 7,000,416 B2Tokyo Electron Limited · 2006